Trade-in your old Water-based Condensation Particle Counter (WCPC) Model 3781 and earn a substantial discount** towards the purchase of a new Environmental Particle Counter Model 3783, the new and improved WCPC for assessing quantitative fine and UFP concentration data accurately and reliably where FRM and equivalent methods fall short. Instruments traded in do not need to be working. Reference promotional code 3781TRADEIN.
**Discount determined based on the age of your instrument. Inquire for more details.